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refactor(@angular/build): allow Bazel to inject a custom esbuild plugin #31513

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merged 1 commit into from
Oct 17, 2025
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refactor(@angular/build): allow Bazel to inject a custom esbuild plugin #31513

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10 changes: 9 additions & 1 deletion packages/angular/build/src/builders/application/index.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -14,7 +14,7 @@ import { BuildOutputFileType } from '../../tools/esbuild/bundler-context';
import { createJsonBuildManifest, emitFilesToDisk } from '../../tools/esbuild/utils';
import { colors as ansiColors } from '../../utils/color';
import { deleteOutputDir } from '../../utils/delete-output-dir';
import { useJSONBuildLogs } from '../../utils/environment-options';
import { bazelEsbuildPluginPath, useJSONBuildLogs } from '../../utils/environment-options';
import { purgeStaleBuildCache } from '../../utils/purge-cache';
import { assertCompatibleAngularVersion } from '../../utils/version';
import { runEsBuildBuildAction } from './build-action';
Expand Down Expand Up @@ -56,6 +56,14 @@ export async function* buildApplicationInternal(
return;
}

if (bazelEsbuildPluginPath) {
extensions ??= {};
extensions.codePlugins ??= [];

const { default: bazelEsbuildPlugin } = await import(bazelEsbuildPluginPath);
extensions.codePlugins.push(bazelEsbuildPlugin);
}

const normalizedOptions = await normalizeOptions(context, projectName, options, extensions);

if (!normalizedOptions.outputOptions.ignoreServer) {
Expand Down
8 changes: 8 additions & 0 deletions packages/angular/build/src/utils/environment-options.ts
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Expand Up @@ -165,3 +165,11 @@ export const useComponentTemplateHmr = parseTristate(process.env['NG_HMR_TEMPLAT
* When `NG_BUILD_PARTIAL_SSR` is enabled, a partial server-side rendering build will be performed.
*/
export const usePartialSsrBuild = parseTristate(process.env['NG_BUILD_PARTIAL_SSR']) === true;

const bazelBinDirectory = process.env['BAZEL_BINDIR'];
const bazelExecRoot = process.env['JS_BINARY__EXECROOT'];

export const bazelEsbuildPluginPath =
bazelBinDirectory && bazelExecRoot
? process.env['NG_INTERNAL_ESBUILD_PLUGINS_DO_NOT_USE']
: undefined;